Square D HDL36045 - 45 A, 3-Pole Circuit Breaker | AmpState

From AmpState, the Square D HDL36045 stands out as a reliable 45 A, 3-pole molded-case circuit breaker designed to protect your panelboards and load centers against overcurrent and short circuits. This isn’t just a part—it’s a strategic upgrade for safety, reliability, and panel efficiency.

• Compact molded-case design maximizes panel space while delivering dependable protection, making it an ideal retrofit for tight panels or crowded layouts.
• Thermal-magnetic trip unit provides stable, repeatable protection curves—responding quickly to short circuits while minimizing nuisance trips from normal inrush or motor starts.
• 3-pole configuration ensures simultaneous disconnection of all conductors in 3-phase circuits, enhancing safety and simplifying fault isolation.
• OEM compatibility designed to pair with matching OEM load centers and panelboards, streamlining field replacements and ensuring a cohesive system fit.
• Versatile for multiple environments suitable for residential, commercial, and light industrial electrical installations where robust branch-circuit protection matters most.

Technical snapshot

• Manufacturer: Square D
• Part Number: HDL36045
• Type: Thermal-magnetic molded case circuit breaker (MCCB)
• Amperage Rating: 45 A
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Real-world use cases

• Replacing an aging or tripping breaker in home or light commercial panelboards where a reliable 3-pole solution is required.
• Upgrading panel protection for equipment with 3-phase loads or motors, ensuring safe, simultaneous shutoff on fault conditions.
• Installing in new builds where space is at a premium and OEM compatibility guarantees a seamless fit with existing load centers.

Why this matters in practice: the thermal-magnetic trip unit blends precise overload protection with fast short-circuit response, delivering predictable performance and reducing downtime across your electrical system. The HDL36045’s compact form factor, combined with OEM panel compatibility, makes it a practical, long-term choice for safeguarding critical circuits.

If you’re seeking a dependable, OEM-aligned 3-pole MCCB that fits compact panels and delivers proven overcurrent protection for residential, commercial, or light-industrial applications, the HDL36045 from Square D is a thoughtful, performance-focused option. Add it to your cart to ensure consistent, code-compliant protection where it counts.